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pyroxylin

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pyroxylin (pīrŏk`sĭlĭn), partially nitrated cellulose (see nitrocellulose nitrocellulose, nitric acid ester of cellulose (a glucose polymer). It is usually formed by the action of a mixture of nitric and sulfuric acids on purified cotton or wood pulp.
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). It is used in lacquers, plastics, and artificial leathers. Pyroxylin lacquers are made by dissolving pyroxylin in a mixture of volatile solvents and adding a plasticizer and a pigment or dye. Pyroxylin plastics are made by colloiding pyroxylin with large amounts of a plasticizer such as camphor; such plastics (e.g., celluloid) are highly flammable. Collodion collodion (kəlō`dēən), solution of pyroxylin in a mixture of alcohol and ether.
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 is a solution of pyroxylin in ether and ethanol.

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Grave, who was the first to use pyroxylin smokeless powder as rocket fuel (1915), G.
 
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